2.2.1 - Nov 23 2022

• Bugfix: number tags <add>, <sub>, <mult> or <div> were not working on new variables (returning an error like "could not 'add' non-numeric user variable" because the variable was 'undefined'). This is now fixed and undefined variables evaluate as zero to be modified by these tags.

2.2.0 - Oct 1 2021

This release includes various bugfixes and features from the GitHub community.

There is a new algorithm for handling the nestable tags (such as <get>, <set>, <bot>, and other variable getter/setter tags)
and it works with <call> tags, too! Thanks, @lee-orr! (PR #377)

+ *
- <set value=<call>add_hello <star></call>>
  ^ The answer is: <get value>.

> object add_hello javascript
    return "hello:" + args[0];
< object

• Bugfix: missing 'let' in for loop (#340)
• If an error is raised within an object macro, include the error in the
  bot's response (#341)
• Fix a truthiness check for whether bot/env vars are 'undefined' (#350)
• Fix the _ word wildcard not working when multiple are in the same
  trigger (#356)
• Add example: json-server-async (#207)
• An option to treat user inputs as case-sensitive instead of always
  lowercasing them (#246/#378)
• Various Dependabot dependency updates.

2.1.0 - March 13 2020

2.1.0 - Mar 13 2020

• The RiveScript shell.js script is now installed as a command line program
  when you npm install rivescript. Call it like riveshell /path/to/brain
  or, if installed locally, npx riveshell /path/to/brain (PR #330)
• TypeScript definition fixes.

2.0.0 - February 25 2019

2.0.0: The Async/Await Update

This is a major new version of RiveScript. It adds async/await support and
makes the API asynchronous everywhere. It also decaffeinates the code,
migrating it from CoffeeScript back to native ES2015+ with modern syntax.

See the Upgrading-v2 document for information about what's
new and how to upgrade your code.

v2.0.0 last minute changes:

• Fix a bug where <reply> in +Trigger wasn't being formatted properly
  (lowercased, etc.) so matching was difficult.
• Add a Redis driver for an example User Variable Session Manager that
  stores variables directly to the cache, and an eg/redis example bot
  that demonstrates it.
• Write documentation for final v2.0.0 launch.

2.0.0-beta.1 - Jan 16 2019

• Republish to npm after updating TypeScript definitions.
• Move release status to "beta"

Before 2.0.0 final release there should be at least one User Variable Session
Driver implemented (likely Redis) to verify the session interface is working
as intended.

2.0.0-alpha.6 - Jul 9 2018

• Make loadFile() and loadDirectory() backwards compatible so "simple" bots
  won't need to change anything to upgrade, but will get deprecation warnings
  instead. ("Simple" bots used loadFile() or loadDirectory() in conjunction
  with replyAsync(), and didn't use any other functions that changed).

2.0.0-alpha.5 - Jul 7 2018

• Fix <botstar> not working at all.
• Make loadFile() and loadDirectory() promise-based.
• Add the User Variable Session Manager Interface and break backwards
  compatibility on all methods that use user variables (e.g.
  getUservar(), lastMatch(), etc.)

2.0.0-alpha.3 - June 23 2018

• Fix a runtime error when <input> is used in a trigger.
• Reformatted the unit tests to use ES2015 multi-line string literals.

2.0.0-alpha.2 - June 16 2018

• Decaffeinate the source code from CoffeeScript back into native JavaScript.
• Add async/await support into the reply process, which enables support for
  a lot of new async features, including use of <call> tags in
  *Condition checks and for replacing the user variable session manager
  with one backed by a database.
• Deprecated: replyAsync().

1.19.0 - March 4 2018

Changes

• 1.19.0 2018-03-04
  • Add the new ?Keyword command to work around the problem that Unicode
    text wouldn't match properly with optional wildcards. For example,
    + [*] 你好 [*] wasn't able to match messages containing the word "你好"
    in the same way as it would if the keyword were using only ASCII symbols.
    Now, the command ? 你好 will allow you to match that keyword anywhere in
    a user's message. (PR #256)

1.18.0 - Nov 27 2017

Changes

• 1.18.0 2017-11-27
  • Fix an infinite loop when using a number as a substitution (PR #206)
  • Optimize substitution algorithm (including person substitutions) to be
    more performant when you have a large set of substitutions defined (PR #208)
  • Add support for defining a global concatenation option when constructing
    the RiveScript object. This will set the default concat mode when
    parsing files that didn't define their own local mode (PR #209)
  • Add API function lastTriggers(username) to retrieve the full set of
    triggers that were last matched for that user. For example, if some triggers
    redirected to others, all the triggers that were touched will be
    returned by this function (PR #217)
  • Remove dependency on jQuery for loading files in a web environment and
    instead use a standard XMLHttpRequest (PR #251)

1.17.2 - Jan 19 2017

Changes

• 1.17.2 2017-01-19
  • Fix <call> tags not working inside of the @Redirect command and the
    inline redirect {@} tag. Note that only synchronous object macros that
    return a string response are allowed in these, just like in *Condition
    commands (PR #203)

1.17.1 - December 8 2016

Changes

• 1.17.1 2016-12-08
  • Fix sorting algorithm for triggers with %Previous, making their sort order
    deterministic and correct regardless of the order they appeared in the
    source file (PR #194)
  • Fix the function prototype for getVariable to only accept the name
    parameter for a bot variable. Previously it was accepting (username, name)
    which was incorrect because bot variables are global and have no relation
    to a particular username.

1.17.0 - October 11 2016

Changes

• 1.17.0 2016-10-11
  • Fix accidental double-piped wildcards caused by missing arrays (PR #176).
  • Fix tags like {uppercase} in the BEGIN block from affecting object macros
    before they could be called (bug #178).
  • In the parser, include the current topic in some common error messages, such
    as syntax errors, single-character lines and unknown commands (bug #140).
  • Allow forceCase to apply to topics too, both in the > topic command and
    in the {topic=...} tag (bug #158).
  • In case of deep recursion while scanning topic inheritance trees, the error
    now includes the current topic that it gave up on (bug #167).

1.16.0 - September 6 2016

Changes

• 1.16.0 2016-09-06
  • Add TypeScript declaration files (PR #162).
  • Add a --watch option to shell.js to automatically reload the bot's
    brain when the source files change (PR #160).
  • Fix the json-server example not giving errors correctly (passing invalid
    data into the RiveScript library and potentially raising an exception
    from within there; bug #165).